Self-adaptive damping device for high tower structure of wind driven generator
By working in tandem with a cross-shaped linear motor and a yaw device, the problem of insufficient response speed and damping adjustment capability of existing tower structure vibration reduction devices has been solved, achieving adaptive suppression of multi-dimensional vibrations of wind turbines and improving operational stability and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-03-20
AI Technical Summary
Existing tower structure vibration reduction devices have insufficient response speed and damping adjustment capability, which cannot effectively suppress multi-dimensional vibrations and affect the stability and reliability of wind turbines.
By employing a cross-shaped linear motor and yaw device, combined with a vibration angle sensor and control system, the movement direction of the moving plate is made consistent with the vibration direction of the tower, and vibration reduction is achieved through adaptive adjustment.
It improves the operational stability and reliability of wind turbines, reduces the vibration impact of high tower structures, and enhances the adaptability and flexibility of the equipment.
Smart Images
Figure CN224017622U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high tower structure adaptive damping technical field especially wind driven generator tower section damping technical field, concretely relates to a wind driven generator high tower structure adaptive damping device. BACKGROUND
[0002] The current tower section structure damping device is mainly composed of a mass block, a damper and a spring, and the structure does not need external power supply during operation, and the response speed and damping adjustment capacity are insufficient, even if the weight of the mass block is increased, the damping effect of the device is not obviously improved, the stable operation of the wind driven generator cannot be effectively guaranteed, and on the contrary, the quality of the whole machine is increased. In addition, the wind driven generator is affected by wind force from multiple directions during operation, and multi-dimensional vibration superposition is generated. The existing single direction damping structure cannot simultaneously cooperatively suppress vibration in multiple directions, so that the stability and reliability of the wind driven generator in a complex vibration environment are seriously affected. SUMMARY
[0003] In view of the above problems, the utility model provides a wind driven generator high tower structure adaptive damping device, which has adaptive adjustment and suppression damping in the direction and reverse electromagnetic output suppression damping, improves the operation stability and reliability of the wind driven generator, and reduces the vibration influence of the high tower structure.
[0004] To achieve the above purpose, the technical scheme of the utility model is:
[0005] A wind driven generator high tower structure adaptive damping device, comprising a tower section, a cross-type linear motor and a yaw device are arranged in the tower section. The yaw device is used to drive the cross-type linear motor to operate, so that the movement direction of the moving plate is consistent with the vibration direction of the tower section. A vibration angle sensor for receiving vibration signals is installed on the tower section, and a control system for receiving vibration angle sensor signals and controlling the operation of the yaw motor is installed. The cross-type linear motor comprises a moving part and a stator part. The moving part comprises a cylindrical shaft, and a moving plate forming a cross shape is annularly installed on the cylindrical shaft.
[0006] The stator part is composed of two single-sided stators; a plurality of iron cores are installed in the single-sided stator, each iron core is provided with a gap for the moving plate to pass through and maintains a mechanical air gap with the moving plate;
[0007] The core back has a groove, the fixing key of the core is installed in the core groove and is welded with the core, and the winding on the core is fixed on the core after being shaped by the non-woven tape and then is integrated by vacuum pouring glue.
[0008] The beneficial effects of the above technical scheme are that: through the setting of the yaw device, the moving direction of the mover plate of the cross-shaped linear motor can be consistent with the vibration direction of the tower, so as to effectively suppress the vibration of the tower. The cooperation of the vibration angle sensor and the control system enables the device to respond in real time according to the vibration of the tower, thereby improving the stability and reliability of the wind turbine operation.
[0009] As a further improvement of the above scheme, the upper ends of the single-sided stators are connected to each other through the stator upper mounting plates, and the lower ends are mounted on the motor base. The stator upper mounting plates are provided with sliding grooves, and the mover plates on the top of the mover components pass through the sliding grooves, and the mover plates are provided with horizontal and vertical limiting mover limiting pulleys.
[0010] The beneficial effects of the above technical scheme are that: through the setting of the stator upper mounting plates and the sliding grooves, stable movement guidance is provided for the mover plates, and the mover limiting pulleys can prevent the mover plates from deviating during movement, thereby improving the stability and precision of the movement of the mover plates.
[0011] As a further improvement of the above scheme, the mover plates on the top of the mover components are provided with coded rulers, which are used in conjunction with the position sensors on the stator components.
[0012] The beneficial effects of the above technical scheme are that: the use of the coded rulers in conjunction with the position sensors can monitor the position changes of the mover plates in real time, provide accurate position feedback for the control system, and thus realize accurate control of the movement of the mover plates, thereby improving the damping effect.
[0013] As a further improvement of the above scheme, the mover plates on the bottom of the mover components are provided with counterweights, and the positions of the counterweights relative to the mover plates are adjustable, and the masses are adjustable.
[0014] The beneficial effects of the above technical scheme are that: the setting of the counterweights can adjust the inertial force of the mover plates, and by adjusting the positions and masses of the counterweights, the mover plates can better adapt to different vibration conditions, thereby enhancing the adaptability and flexibility of the device.
[0015] As a further improvement of the above scheme, the cylinder shafts are provided with guide rods at both ends, and the guide rod ends are provided with energy-absorbing springs.
[0016] The beneficial effects of the above technical scheme are that the guide rod and the energy-absorbing spring provide good guidance and buffering for the mover component, prevent the mover component from colliding during movement, and improve the stability and service life of the device.
[0017] As a further improvement of the above scheme, the end plate 35 at both ends of the cross-type linear motor 3 is provided with a buffer honeycomb aluminum 39 and a guide cylinder 310, and a copper sleeve is installed in the guide cylinder 310.
[0018] The beneficial effects of the above technical scheme are that the design of the buffer honeycomb aluminum and the guide cylinder can effectively prevent the mover component from being impacted at the end, the installation of the copper sleeve improves the wear resistance and durability of the guide cylinder, and further improves the reliability and durability of the device. The guide rod at both ends of the mover component is installed in the copper sleeve.
[0019] As a further improvement of the above scheme, the bottom of the cross-type linear motor is provided with a mover locking device for locking the mover in a non-working state, and the mover locking device is controlled by hydraulic pressure.
[0020] The beneficial effects of the above technical scheme are that in the non-working state, the mover is locked by the hydraulic pressure controlled mover locking device, which can effectively prevent the mover from moving inside the motor, avoid unnecessary wear and energy loss, and prolong the service life of the device.
[0021] As a further improvement of the above scheme, the iron core adopts a segmented structure, and gaps are left between the segments to prevent additional stress between the segments due to heating of the motor.
[0022] The beneficial effects of the above technical scheme are that the segmented iron core and the gap between the segments can effectively prevent additional stress caused by the expansion of the iron core due to heating of the motor, ensuring the structural stability of the iron core and the normal operation of the motor, and improving the reliability and durability of the motor.
[0023] As a further improvement of the above scheme, the cross-type linear motor is installed on the yaw bearing through a motor base.
[0024] The beneficial effects of the above technical scheme are that the cross-type linear motor is installed on the yaw bearing through the motor base, so that the cross-type linear motor can flexibly yaw with the rotation of the yaw bearing, ensuring that the movement direction of the mover plate is always consistent with the vibration direction of the tower, improving the adaptability and effectiveness of the vibration reduction device.
[0025] As a further improvement of the above scheme, the control system is integrated into the first layer tower control cabinet of the tower foundation.
[0026] The technical scheme has the beneficial effects that: the integrated design of the control system simplifies the control structure, improves the control efficiency and reliability, facilitates operation and maintenance, and realizes centralized control and management of the damping device.
[0027] The overall beneficial effects of the utility model compared with the prior art are:
[0028] The wind turbine high tower structure self-adaptive damping device realizes self-adaptive suppression of multi-dimensional vibration of the wind turbine tower through the cooperative work of the cross-shaped linear motor, the yaw device and the control system. The innovative cross-shaped linear motor structure combined with the adjustable counterweight block of the mover plate, the guide rod and the spring design improves the damping effect and the adaptability of the device. The flexible yaw function of the yaw device ensures the consistency of the damping direction and the tower vibration direction, further enhancing the damping effect. Overall, the utility model effectively improves the operation stability and reliability of the wind turbine, reduces the vibration influence of the high tower structure, and provides a strong guarantee for the long-term stable operation of the wind turbine generator set. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 It is a schematic diagram of the overall structure of the wind turbine high tower structure self-adaptive damping device;
[0030] Figure 2 It is a schematic diagram of the external structure of the cross-shaped linear motor (top view);
[0031] Figure 3 It is a schematic diagram of the external structure of the cross-shaped linear motor (top view);
[0032] Figure 4 It is a schematic diagram of the external structure of the cross-shaped linear motor end face;
[0033] Figure 5 It is a schematic diagram of the internal structure of the cross-shaped linear motor end face;
[0034] Figure 6 It is a schematic diagram of the cross-shaped linear motor end plate and guide buffer structure;
[0035] Figure 7 It is a schematic diagram of the cross-shaped linear motor mover structure;
[0036] Figure 8 It is a schematic diagram of the cross-shaped linear motor mover end face structure;
[0037] Figure 9 It is a schematic diagram of the yaw device structure.
[0038] In the figure: 1, tower drum; 2, yaw device; 3, cross type linear motor; 21, yaw bearing; 22, yaw gear; 23, yaw motor; 31, single side stator; 32, stator mounting plate; 33, mover limiting pulley; 34, mover plate; 35, end plate; 36, counterweight; 37, iron core; 38, guide rod; 39, buffer honeycomb aluminum; 40, cylindrical shaft; 310, guide cylinder; 311, motor base; 312, locking device. DETAILED DESCRIPTION
[0039] In order to make the skilled in the art better understand the technical solutions, the utility model is described in detail below in combination with examples, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model.
[0040] As shown in the figure, a wind turbine high tower structure self-adaptive damping device mainly comprises the following components: Figures 1-9
[0041] 1. Cross type linear motor 3: installed inside the higher and more spacious part of the tower drum 1, containing mover components and stator components, etc., wherein the mover components are installed in the stator components, including the intermediate cylindrical shaft 40, and the mover plates 34 distributed in cross shape installed on the cylindrical shaft 40 through bolts, the mover components adopt cross type structure, which can increase the electromagnetic force area, the mover plates 34 are aluminum plates of non-magnetic material, four horizontal and two vertical mover limiting pulleys 33 are arranged on the mover plates 34 at the upper top of the mover components, the mover plates 34 at the lower bottom of the mover components are provided with counterweights 36, and the positions and masses of the counterweights 36 are adjustable, an encoded ruler is arranged on the mover plates 34 at the upper top of the mover components, which is used in conjunction with the position sensor on the stator, guide rods 38 are arranged at both ends of the mover, and energy absorbing springs are arranged at the ends of the guide rods 38; the inner side of the end plate 35 is provided with a buffer honeycomb aluminum 39 and a guide cylinder 310, which can effectively prevent the mover components from being impacted at the end, the thermal sleeve installation of the copper sleeve improves the wear resistance and durability of the guide cylinder 310, and further improves the reliability and durability of the device. The guide rods 38 at both ends of the mover components are installed in the copper sleeve.
[0042] Stator component, composed of at least two single-sided stators 31; a plurality of iron cores 37 are installed in the single-sided stator 31, and gaps for the movement of the mover plate 34 are provided between the iron cores; in this embodiment, there are two single-sided stators 31 on each side of the stator component, a total of four single-sided stators 31, each single-sided stator 31 has four iron cores 37 and corresponding windings, and one side of the stator component is provided with a terminal box, and the windings are fixed on the iron cores 37 after being fixed by the non-woven tape, and then integrated by vacuum pouring; the lower bottom surface of the two single-sided stators 31 is installed on the motor base 311, and the upper top surface of the two single-sided stators 31 is fixed by using a stator upper mounting plate 32, and a sliding groove is formed on the stator upper mounting plate 32; the mover plate 34 at the top of the mover component passes through the sliding groove, and the mover limiting pulley 33 is provided on the mover plate 34 for transverse and vertical limiting, and the movement of the mover plate 34 in the transverse direction and the vertical direction is limited by the mover fiber pulley, thereby ensuring the stability of the longitudinal movement of the mover plate 34.
[0043] 2. Yaw device 2: can rotate to drive the cross-type linear motor 3 to rotate, to ensure that the movement direction of the mover for vibration suppression is consistent with the vibration direction of the tower drum 1; it includes a mounting frame, a yaw bearing 21, a yaw gear 22, a yaw motor 23, and a vibration sensor, the entire cross-type linear motor 3 is installed on the yaw bearing 21 through a stator base, the inner ring of the yaw bearing 21 is provided with a gear which is in meshing transmission with the yaw gear 22, the yaw gear 22 is driven to rotate by the yaw motor 23, and the yaw motor 23, the yaw gear 22 and the yaw bearing 21 are all installed on the mounting frame, and the mounting frame is fixed on the existing double-headed screw rod at the joint of the tower drum 1 by bolts.
[0044] 3. Control system: integrated into the control cabinet of the first layer of the tower base tower drum 1, the tower drum 1 is provided with a vibration-angle sensor, and the signal of the vibration-angle sensor is also integrated into the control cabinet.
[0045] The working principle of the device is as follows:
[0046] 1. When the tower drum 1 is subjected to external strong wind load and the vibration amplitude is large, and there is a deviation of more than 5° between the vibration direction of the tower drum 1 and the direction in which the mover plate 34 in the cross-type linear motor 3 can move, the vibration-angle sensor sends a signal to the control system of the tower base.
[0047] 2. The control system controls the rotation of the yaw motor 23, the yaw motor 23 drives the rotation of the yaw gear 22, and then drives the rotation of the yaw bearing 21, and the entire cross-type linear motor 3 is driven to yaw by the motor base 311 to a position where the movement direction of the mover plate 34 is consistent with the vibration direction of the tower drum 1.
[0048] 3. When the control system receives the positive vibration signal of the tower drum 1, the control system controls the negative movement of the mover plate 34 in the cross-type linear motor 3. The mover limiting pulley 33 guides the linear movement of the motor plate 34. The end plate 35 prevents the limiting impact of the mover plate 34 in the case of out-of-control. The mover plate 34 moves a small distance in the iron core 37, which can quickly and effectively apply the electromagnetic force of the reverse vibration to the tower drum 1. The weight block 36 at the bottom of the mover plate 34 can adjust the position and weight, so that the inertial force of the mover plate 34 is larger.
[0049] 4. When the vibration direction of the tower drum 1 is reversed (negative vibration), a signal is sent to the tower foundation control system, and the control system controls the positive movement of the mover plate 34 in the cross-type linear motor 3. The mover plate 34 applies the reverse electromagnetic force of the vibration to the tower drum 1.
[0050] 5. When there is no wind and the vibration of the tower drum 1 is small, the locking device 312 can be used to lock the mover plate 34 to prevent the mover plate 34 from moving in the cross-type linear motor 3.
[0051] In addition, the cross-type linear motor 3 has the following preferred design:
[0052] 1. The mover locking device 312 uses hydraulic control to lock the mover when the device is not working.
[0053] 2. The cross-type linear motor 3 is provided with a buffer honeycomb aluminum 39 and a guide cylinder 310 on the end plate 35 at both ends, and a copper sleeve is arranged in the guide cylinder 310 and is installed by hot fitting.
[0054] 2. The iron core 37 adopts a segmented structure, and gaps are left between the segments to prevent additional stress between the segments due to motor heating.
[0055] 3. The cross-type linear motor 3 is provided with a position sensor on the stator, and the signal and control are integrated into the tower foundation first layer tower drum 1 control cabinet.
[0056] 4. The tower drum 1 is provided with a vibration angle sensor, and the signal and control are integrated into the tower foundation first layer tower drum 1 control.
[0057] 5. The control system of the cross-type linear motor 3 is integrated into the tower foundation first layer tower drum 1 control.
[0058] It should be noted that in this paper, the terms: including, containing and any other variants are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. The principle and implementation of the present application are described by using specific examples. The above examples are only used to help understand the method and its core idea. The above is only the preferred embodiment of the present application. It should be pointed out that due to the limited expression of the text, there are objectively infinite specific structures. For ordinary technical personnel in this technical field, without departing from the principle of the present application, some improvements, refinements or changes can be made, and the above technical features can be combined in a proper way; these improvements, refinements, changes or combinations, or without improvement, the concept and technical scheme of the present application are directly applied to other occasions, which should be regarded as the protection scope of the present application.
Claims
1. An adaptive vibration reduction device for a wind turbine tower structure, comprising a tower (1); characterized in that, The tower (1) is equipped with a cross-shaped linear motor (3) and a yaw device (2); the yaw device (2) is used to drive the cross-shaped linear motor (3) to run, so that the movement direction of the moving plate (34) is consistent with the vibration direction of the tower (1); the tower (1) is equipped with a vibration angle sensor for receiving vibration signals and a control system for receiving vibration angle sensor signals and controlling the operation of the yaw motor (23); The cross-shaped linear motor (3) includes: The moving part includes a cylindrical shaft (40) on which a moving plate (34) forming a cross shape is mounted in a ring; The stator assembly is composed of two single-sided stators (31); multiple sets of iron cores (37) are installed inside the single-sided stator (31), and each set of iron cores (37) is provided with a gap for the moving plate (34) to pass through and maintains a mechanical air gap with the moving plate (34); The yaw device (2) includes a mounting frame, which is bolted to an existing double-ended screw at the section of the tower (1); the mounting frame includes: Yaw bearing (21), with a gear on its inner ring; The yaw gear (22) meshes with the inner ring gear of the yaw bearing (21) for transmission. The yaw motor (23) is used to drive the yaw gear (22) to rotate.
2. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The upper end of the single-sided stator (31) is connected to each other through the stator mounting plate (32), and the lower end is mounted on the motor base (311); the stator mounting plate (32) is provided with a sliding groove; the moving plate (34) at the top of the moving part passes through the sliding groove, and the moving plate (34) is provided with moving limiting pulleys (33) for horizontal and vertical limiting.
3. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The moving plate (34) on the top of the moving part is equipped with an encoding ruler, which is used in conjunction with the position sensor on the stator part.
4. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that, The bottom of the moving part is provided with a counterweight (36) on the moving plate (34), and the position and mass of the counterweight (36) relative to the moving plate (34) are adjustable.
5. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The cylindrical shaft (40) is provided with guide rods (38) at both ends, and the guide rods (38) are provided with energy-absorbing springs at their ends.
6. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The cross-shaped linear motor (3) has buffer honeycomb aluminum (39) and guide cylinder (310) on the end plates (35) at both ends, and a copper sleeve is installed inside the guide cylinder (310).
7. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The bottom of the cross-shaped linear motor (3) is provided with a mover locking device (312) for locking the mover when it is not in operation; the mover locking device (312) is hydraulically controlled.
8. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The iron core (37) adopts a segmented structure with gaps between segments.
9. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that: The cross-shaped linear motor (3) is mounted on the yaw bearing (21) via the motor base (311).
10. The adaptive vibration reduction device for a high-tower structure of a wind turbine generator according to claim 1, characterized in that, The control system is integrated into the control cabinet of the first layer of the tower (1) of the tower base.